Me: “We’re required to let you know that our coffee and coffee products contain chemicals known to the state of California to cause cancer and reproductive harm. You really don’t need to worry about it; you’d have to consume a lot of coffee before it took any effect.”

Customer: “That has to be illegal! I’m never coming here again until you take the cancer out of your coffee!” *storms out of the store*

(Later on, when I finish my shift and go outside, I see the same customer. She’s drinking a blended iced coffee from our competition across the street and smoking a cigarette while complaining to someone on the phone about how our store puts cancer in our drinks.)